Volume Converter
Convert volumes between gallons, liters, cups, milliliters, and fluid ounces.
How many liters are in a gallon?
1 US gallon = 3.785 liters. 1 Imperial gallon (UK) = 4.546 liters. US gallon is standard in US; most other countries use liters. Conversions: 1 gallon = 3.785 L = 128 fl oz = 16 cups. Reverse: 1 liter = 0.264 gallons = 33.8 fl oz = 4.23 cups. Gas prices: $3/gallon (US) ≈ $0.79/liter. Water bottles: 1 liter = 0.26 gallons.
How many cups are in a gallon?
US measurements: 1 gallon = 16 cups = 4 quarts = 8 pints = 128 fluid ounces. Breakdown: 1 gallon = 4 quarts, 1 quart = 2 pints, 1 pint = 2 cups, 1 cup = 8 fl oz. Example: Recipe calls for 2 gallons = 32 cups. Half gallon = 8 cups. Common: Gallon of milk = 16 cups, 2-liter soda = 8.5 cups. Remember: 16 cups per gallon for cooking conversions.
What is the difference between fluid ounces and ounces?
Fluid ounces (fl oz) measure VOLUME (liquids). Ounces (oz) measure WEIGHT (mass). They're different: 8 fl oz water = 8.3 oz weight (close), 8 fl oz honey = 12 oz weight (denser), 8 fl oz oil = 7.4 oz weight (lighter). Cooking: "1 cup" = 8 fl oz volume always, but weight varies by ingredient. Use fluid ounces for liquids, regular ounces (or grams) for solids. Don't interchange them.
How do I convert milliliters to tablespoons and teaspoons?
Cooking conversions: 1 tablespoon (Tbsp) = 15 mL = 3 teaspoons (tsp). 1 teaspoon = 5 mL. Examples: 30 mL = 2 Tbsp = 6 tsp, 100 mL = 6.67 Tbsp = 20 tsp, 250 mL = 1 cup. Quick reference: 5 mL (tsp), 15 mL (Tbsp), 240 mL (cup), 500 mL (2 cups), 1000 mL (4 cups = 1 quart). Measuring spoons show both mL and tsp/Tbsp for baking accuracy.